Does that mean we're getting more savvy? Maybe, it just means that propaganda is well tailored to its environment.
I think both are true -- part of what propaganda is tailoring itself to is our media-savviness. And the way that seems to be manifesting is that the effective propaganda for the age where people don't believe anything is a denial-of-service attack on the truth, because, as we are in the process of discussing, the world is complicated and doesn't lend itself cleanly to simple answers, usually. So then literally every utterance gets attacked, until nobody can say anything, it's all dunks and straw-man takedowns.
I've started to become quite interested in cyclical theories of history, which I find to be incredibly over-extended in a million ways; but which contains core truths that are thought-provoking. The Donald Duck thing strikes me as potentially one such -- the susceptibility to that particular do your part for the war effort vibe could have a generational component that seems idiotic to us bc we're the wrong generation. But we will have our own stupidities. Certainly I do.